210061 has 4 divisors (see below), whose sum is σ = 212800. Its totient is φ = 207324.

The previous prime is 210053. The next prime is 210071. The reversal of 210061 is 160012.

210061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210061 - 2³ = 210053 is a prime.

It is a super-3 number, since 3×210061³ = 27807217933370943, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251 + ... + 1408.

It is an arithmetic number, because the mean of its divisors is an integer number (53200).

2²¹⁰⁰⁶¹ is an apocalyptic number.

It is an amenable number.

210061 is a deficient number, since it is larger than the sum of its proper divisors (2739).

210061 is an equidigital number, since it uses as much as digits as its factorization.

210061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 210061 is about 458.3241211195. The cubic root of 210061 is about 59.4449741965. Note that the first 3 decimals are identical.

Adding to 210061 its reverse (160012), we get a palindrome (370073).

The spelling of 210061 in words is "two hundred ten thousand, sixty-one".